New die-castable Mg–Zn–Al–Ca–RE alloys are developed and evaluated in order to determine their suitability for high temperature applications. The crystallization of an Al–Ca compound along the grain boundaries and Al–RE compounds both within the grains and along the grain boundaries helps to improve creep properties of the alloys. The creep resistance of diecast specimens of some of the investigated alloys is comparable to that of ADC12 aluminum alloy that is currently used for diecasting of automobile powertrain parts.
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Anyanwu et al. (2003) studied this question.
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